01 f-250 7.3 rough idle, stall then service engine soon light
 

01 f250 7.3 stars up and runs for a few minutes then start to idle rough then stalls then the service engine soon light comes on. this process will repeat itself for about 20 min or until the oil temp heats up quite a bit. i don't know what to do and its really starting to piss me off and nobody can give me any answers unless i pay them 1000 $ just to look at it